Department Overview
The Equities Technology division is responsible for building and maintaining the high-performance, ultra-low-latency trading infrastructure that powers our global equities business. This includes market data dissemination, order routing, algorithmic execution, smart order routing (SOR), and real-time risk management systems. We operate in a highly competitive environment where microseconds matter, requiring cutting-edge software engineering practices, deep hardware-software co-design, and robust system reliability.
Role Summary
We are seeking an exceptional Senior Software Engineer with deep expertise in Rust and C++ to join our Equities Low-Latency Trading Technology team.
In this role, you will design, develop, and optimize our next-generation trading systems. You will lead the strategic transition of legacy high-performance C++ components to modern Rust where safety and concurrency are paramount, while continuing to maintain and optimize critical ultra-low-latency C++ execution paths.



This is a highly technical role requiring a strong understanding of computer architecture, operating systems, network protocols, and up-to-date software engineering paradigms.
Key Responsibilities
1. System Design & Development
Architect, build, and maintain ultra-low-latency trading systems, including exchange connectivity gateways, market data feeds, and algorithmic execution engines using Rust and C++
Design clean, modular, and reusable APIs and libraries that can be leveraged across multiple trading desks.
Lead the strategic migration of critical trading components from C++ to Rust, leveraging Rust's memory safety and concurrency guarantees without sacrificing performance.
2. Performance Optimization
Profile and optimize systems to achieve sub-microsecond latencies and deterministic performance.
Apply low-latency techniques such as CPU pinning, cache-friendly data structures, lock-free programming, memory-mapped files, and custom memory allocators.
Utilize kernel

📌 Senior Software Engineer – Equities Low-Latency Technology (Pune)
🏢 Citi
📍 Pune